Improvement in machines for planing moldings



UNITED STATES PATENT OFFICE.

IMPROVEMENT IN MACHINES FOR PLANING MOLDINGS.

Specification forming part of Letters Patent No. 55,833, dated June 26,18661.

To all whom it may concern:

Be it known that I, THOMAS DrcKINsoN, of Newark, in the county of Essexand State of New Jersey, have invented a new and useful ImprovementinWood-MoldingMachines; and I do hereby declare that the followingis afull, clear, and exact description thereof, which will enable othersskilled in the art to make and use the same, reference being had to theaccompanying drawings, forming a part 0f this specification, in which-Figure lis a top or plan View of a wood- Inolding machine with myimprovement at-. tached. Fig. 2 is a vertical longitudinal section ofthe same through the line a: a2, Fig. l. Fig. 3 is a crosssection of thesame through vthe line y y, Fig. l. Fig. 4 is a bottom view of a stripof molding attached to the board by means of which it is fed to thecutters.

Similar letters of reference indicate lik parts.

My invention has for its object to furnish a Wood-m0lding machine forworking irregular forms on circles or parts of circles; and it consistsof the`combination, with an ordinary wood-molding machine, of anadjustable boxtable, constructed and arranged as hereinafter more fullydescribed. ,a ,j r I j,

A is the frame of the machine. B is the drivin g-shaft, to which thepower that drives the machine is applied. This shaft works in bearings Oand D upon the frame A of the machine, and carries two pulleys, E and F.

Around the pulley E passes a band, G, which passes thence around apulley, H, upon the shaft I, and communicates motion to said shaft. J isa band passing around a pulley, K, upon the said shaft I and a pulley,L, upon the feedroller shaft M, transmitting motion from the shaft I tothe said shaft M. The other feedroller shaft is not represented in thedrawings. N is a band which passes around the pulley F on thedriving-shaft B and a pulley, O, on the cutter-shaftP, communicatingmotion from the said driving-shaft to the said cutter-shaft. This shaftP revolves in bearings R and S on the frame of the machine and carriesthe cutters T.

The adjustable table U slides upon the upright parts of the machine asguides, and is supported and adjusted by the screw V, passing throughthe frame A of the machine, and the adjustable table U, as shown in Fig.3.'

In the ordinary molding machine only straight moldings can be worked.The strip of timber out of which the molding is to be worked is placedupon the adjustable table U,

which is adj usted by the screw V, and the strip i fed under the cuttersby the feed-rollers.

To the adjustable table U, I attach a box, W, by bolts, as shown inFigs. 2 and 3.

The top or cover X of the box W, which forms the table in my improvedmachine, is attached to the box by being slid upon the cross-pieces A',attached to the upper edges of the box W, the said cross-pieces Afitting into dovetailed grooves formed in the under side of the cover ortable X, as shown in Fig. 2.

The box W and cover or table X being attached to the table U, isadjusted in the same way by means of the screw V, a hole being madethrough the top of the said cover Xfor the passage of the key or wrenchB', by which the said screw is operated, as shown in Figs. l and 3. Y

O and D are guides, the curve of which should be the same as the curveof the molding to be cut or worked. For these guides I usuallytake thestrips that have been cut from the concave and convex edges of themolding itself.

E is a board, to which the strip F', from which the molding is to beWorked, is attached for convenience in holding and feeding it to thecutters.

In using the machine with this improvement the position of the table Xis adj usted by means of the screw V in the manner before described, andthe strip from which the molding is to be worked is fed to the cuttersby hand by means of the board E. I

I claim as new and desire to secure by Letters Patent- The arrangementdescribed and represented for dressing two moldings simultaneously byone cutter-head, consisting of the adjustable box-table W X, constructedand operated substantially as described.

THOMAS DIGKIN SON.

i, Witnesses:

M. M. Livnves'roN, JAMES T. GRAHAM.

